Topic 109 · Networking Fundamentals
109.3 Basic network troubleshooting
Step 1 of 12 · weight 4
Collect evidence
Weight 4. When the network is down, a sysadmin either fixes the host or gathers enough proof to hand the case to the network team. The check stays on this computer.
- Address and protocol stayed in 109.1. Writing the address stayed in 109.2. Here the saved setting has failed and the host is read from its own side
- Routing in this lesson is the host's table, not the whole network. The goal is a packet path you can show someone else
- Exam tools are ip, hostname, ss, ping, ping6, traceroute, traceroute6, tracepath, tracepath6, netcat, and netstat. hostname was already covered
Exam note
If the question is whose problem this is, the answer starts with evidence from this host: address, route, gateway, remote IP, then the name.